<%--
  Created by IntelliJ IDEA.
  User: Albert Lee
  Date: 2020/5/26
  Time: 16:40
  To change this template use File | Settings | File Templates.
--%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<%@ page import="java.sql.*"%>

<%

    String path = request.getContextPath();

    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
  <head>
    <base href="<%=basePath%>">
    <title>按id号条件查询</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
      </head>

  <body>

    <%

    request.setCharacterEncoding("UTF-8");

    String id = request.getParameter("id");
    Connection conn = null;
    Statement stat = null;
    ResultSet rs = null;

    Class.forName("com.mysql.cj.jdbc.Driver");
    String url = "jdbc:mysql://localhost:3306/demo";
    String user = "root";
    String password = "123456";
    conn = DriverManager.getConnection(url,user,password);
    stat = conn.createStatement();

    rs = stat.executeQuery("select * from goods where id=" + id + "");

    %>

    <br>
        <h3>符合id号条件的商品信息</h3><hr>
    <br>

     <table width="450" border="100" cellSpacing=1 style="font-size:15pt;border:dashed 1pt">

    <tr>
    <td>id号</td>
    <td>名称</td>
    <td>价格</td>
    <td>数量</td>
    <td>备注</td>
    </tr>

    <%

    if(rs.next()) {
    out.print("<tr>");
    out.print("<td>" + rs.getInt("id") + "</td>");
    out.print("<td>" + rs.getString("name") + "</td>");
    out.print("<td>" + rs.getDouble("price") + "</td>");
    out.print("<td>" + rs.getInt("number") + "</td>");
    out.print("<td>" + rs.getString("comment") + "</td>");
    out.print("</tr>");
    } else{
    out.print("<h4>不存在此条件的信息！</h4>");
    }
    %>

      </table>
      <br>
      <br>
       <h4><a href=showInfo.jsp>返回查询页面</a></h4>

      <%

    if(rs != null) {
         rs.close();
         rs = null;
    }

         if(stat != null) {
         stat.close();
         stat = null;
    }

         if(conn != null) {
         conn.close();
         conn = null;
    }

    %>

  </body>

</html>
